Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27302
Title: A smart hollow filament with thermal sensitive internal diameter
Authors: Meng, Q
Hu, JL 
Shen, L
Hu, Y
Han, J
Keywords: Fibers
Phase
Polyurethane
Separation
Issue Date: 2009
Publisher: John Wiley & Sons
Source: Journal of applied polymer science, 2009, v. 113, no. 4, p. 2440-2449 How to cite?
Journal: Journal of applied polymer science 
Abstract: In this work, a thermoplastic shape memory polyurethane was prepared via melt polymerization and a corresponding shape memory hollow fiber was fabricated via melt spinning. The fiber mechanical properties, especially shape memory effect, were characterized by static tensile, thermo-mechanical cyclic tensile testing. The hollow fiber switching temperature was the melting transition temperature of the soft segment phase at about 41?XC. The tenacity of the hollow fiber was about 1.14 cN/dtex, and breaking elongation was 682%. The shape fixity ratio was above 87% and the recovery ratio was above 89%. The internal diameter of the hollow fiber could be noticeably changed and the deformed fiber cross-section could be well fixed. Once heated above the soft segment phase melting transition temperature, the hollow fiber internal hole recovered to its original diameter. The results from differential scanning calorimetry, X-ray diffraction, and dynamic mechani
URI: http://hdl.handle.net/10397/27302
ISSN: 0021-8995
EISSN: 1097-4628
DOI: 10.1002/app.30203
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